The AHPF series heaters are used to
heat low flows of air, gas, water, or
aqueous solutions. Applications
include those where clean air is
necessary, as in laboratories and
environmental testing areas. The
stream of air is heated by passing
over an enclosed heated surface
rather than directly over resistance
elements. This method assures that
no foreign matter will enter the stream
of flow. The AHPF series is also used as a miniature circulation heater for
small volume of liquids as in
photographic developer solution,
chemicals, dyes, and inks.
Calculate the flow rate, temperature
rise, or power requirement as
described on page J-17.
For heating liquids, use the formulas
on pages Z-10 or Z-41.
The Thermocouple “T” fitting
AHPF-NPT12 can be used with the
subminiature thermocouple probes
and with the SSLK series stainless
steel compression fittings (see the
OMEGA Complete Temperature
Measurement Handbook and
Encyclopedia®) and with stainless
steel compression fittings (model
SSLK-18-14) to monitor or control
temperature at the outlet of the
AHPF series heaters.

*Indicates Watts per inch of heated length. Use the table above to determine minimum
required flow rates.
**These air heaters can be operated on either 120 or 240 Volts.
Specifications are shown for either 120 or 240 Volt operation.

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